Shipping carton



Nov. 16, 1948. s. A. BLAc-:KMAN 2,453,829

SHIPPING cARToN Filed sept. v26; 1946 iB /v INVENTOR- BYCQJMQTGAM HIS ATTORNEYS.

Patented Nov. 16, 1948 y SHIPPING CARTON Smith A.

Gaylord Blackman, Kirkwood, Mo.,

Container Corporation,

assignor to St. Louis, Mo.,

a corporation of Maryland Application September 26, 1946, Serial No. 699,572

` (ci. 22a-23) l 1 Claim.

This invention relates to heavy duty shipping cartons of the kind shown in Beaman Patent No. 2,214,220 of September 10, 1940, wherein the tubular body and the end closures of the carton have side naps that are held in interlocking engagement by an exterior encircling band.

The principal object of the present invention is to provide an end construction for such cartons that will increase the strength, rigidity, durability and load carrying capacity thereof; that -will prevent leakag-e of powdered or granular material from the ends of the carton: and that will provide ice compartments at the ends of the carton. The invention consists in providing auxiliary top and/or bottom end closures that are clamped within the ends of thetubular body of the carton by the exterior locking band for the main end closures and have marginal flaps that seat against said main end closures and space the auxiliary end'closures therefrom so as to form ice compartments in the ends of said tubular body. The invention also consists in the parts and combinations and arrangements of parts hereinafter described and claimed.

In the accompanying drawing, which forms part of this specification and wherein like symbols ref-er to like parts wherever they occur, 1

Fis. 1 is a side elevational view of a shipping carton embodying II-1y invention,

Fig. 2 is a fragmentary plan view of the blank for, the tubular body of the carton. v

Fig. 3 is a plan view oi' a blank for main end closures of the carton,

Fig. 4 is a plan View of a blank for one of the auxiliary end closures 'of the carton; and

Fig. 5 is an enlarged central vertical section through the carton on the line 555 in Fig. 1.

In the accompanying drawing, my invention is shown embodied in a heavy duty shipping carton of the type shown in Bearnan Patent No; 2,214,220. Said carton comprises a tubularbody -A having interlocking end closures B, all preferably made of corrugated board, fiberboard or other bendable sheet material. The tubular body A is divided by vertical creases or scores i into side wall panels 2 and is made from a nat blank whose ends are overlapped and permanently secured together preferably by means of staples 3. l

Each side panel 2 ofthe polygonal tubular body A has at each end thereof a projecting flap 4 adapted to be folded along a score or crease line 5 atwise against the outside face of said panel; Each of the end closures B comprises a closure member of polygonal shape to f lt over the ends of the tubular body member A and has side one of the of the tubular body A, its naps A the folded body panel naps I,

" of the carton atlthe ends marginal flaps 6 corresponding in number to the body flaps 4 and score lines or creases 1 for facilitating bending of said flaps. 'I'he aps 6 terminate at their outer ends in tuck or locking tongues 6a that are marked off by score or crease lines 1. Each end closure B is placed opposite one end 6 arebent over and the locking tongues 6 of the iiaps of said end closure are tucked beneath 4said folded body panel flaps so as to lie between the latter and the body panels 2. The flaps 6 of each end closure in their adjacent side edges that constitute locking recesses for a retaining hoop or securing band 9 that tightly encircles said naps and rmly clamps the locking tongues 8 between said ilaps and the side panels 2 of the ends of said hoop or band being permanently united by means of a suitable hoop'lock or coupling member I0.

The tubular body A of the above carton is also provided with load sustaining auxiliary or inner end closures C, preferably of corrugated board,

iiberboard or other bendable sheet material.

Each of these auxiliary end closures C is of polygf onal shape and snugly nts within the end of the polygonal tubular body A at about the level of the retaining band 9 and has projecting side marginal flaps I i corresponding in number to the body panels 2 and creases or score lines I2 for facilitating bending oi' said aps. The flaps il ofthe auxiliary-end closure C are bent toward the open end of the tubular body A so as to lie iiatwise against'thev inner surfaces of the side wall panels 2 o1' said body opposite the flaps l thereof.

The flaps i I of the auxiliary end closure` C terminate ush with the end of the tubular body A and seat endwise against the main or outside end closures B therefor, and saio auxiliary end closure is clamped tightly in `said tubular body by the locking hoop 9. The llaps closures C serve to space them inwardly of the main or outside end closures B, thereby forming auxiliary compartments I3 in the tubular body A thereof.

By vthe arrangement described, the auxiliary end closures C serve to increase the strength, rigidity and durability of the carton and the load carrying capacity thereof. 'I'he auxiliary end closures C serve to resist the inward pressure oi the locking bands 8 and thus enable the locking tongues S of the main end closure naps 6 to be rigidly clamped by the locking hoops 9 between the body panels 2 and the naps l. At the same time, the auxiliary end closures C are firmly B have notches 8 tubular body A, the

ii of the auxiliary end vdry ice or for water a thereby adapting the assaeae a clamped in the ends of the tubular body A by the thereby preventing leakage 'of the powdered or granulated material from the ends of the carton. If desired, the flaps Il' of the auxiliary end closures C may be adhesively or otherwise bonded to the inner faces of the panels 2 of the tubular body. The flaps ii of the auxiliary end closures C serve to space the latter from the main end closures B and the spaces between said auxiliary and main end closures are adapted to form sepa,- rate compartments in the ends ice in moisture proof bags. l carton for use in the ship- `ment of perishable products. The auxiliary end closures C of the carton also take the vertical load of the contents thereof and thus prevent bulging of the main end closures B undersuch load and the convcentrated wear on said main end closures due to said bulging.

What I claim is:

A shipping carton comprising atubular body of uniform inside width from end to end having flaps at one end thereof bent to lie alongside the outer side face thereof. a main end closure seated against said end of said body and having marginal flaps that are bent -to overlie said body flaps and are thence rebent to lie therebeneath and removof the carton for ablyinterlock therewith, a removable auxiliary end closure' snugly tting entirely within said end of said tubular body adjacent to said body and end closure naps in spaced relation to. said main end closure to provide a chamber between,said end closures, said auxiliary end closure having marginal flaps that lie against the inner side face of said tubular body and terminate substantially iiush with said end thereof in endwise abutting relation tosaid main end closure. and a band tightly encircling said body and end closureilaps at substantially the level of said auxiliary end closure for locking said main and auxiliary and end closures to-said tubular body memberin a substantially immovable. reinforcing and dustproof manner.

SMITH A. BLACKMAN.

REFERENCES CITED The following references are of record in the ille of this patent:

NITED s'rA'rEs PArEN'rs Number Beaman Sept. 10, 1940 

